[MERGE] Allow reference_revision to be None in the xml7 serializer.

[Jelmer Vernooij]

Am Dienstag, den 08.07.2008, 07:25 -0400 schrieb Aaron Bentley:
> Aaron Bentley has voted reject.
> Status is now: Vetoed
> Comment:
> I don't think it ever makes sense for the reference revision to be None, 
> even for working trees.
Does this mean a a TreeReference always has to refer to a particular
revision in the inner branch? Or should a wildcard be indicated some
other way? 

Cheers,

Jelmer
-- 
Jelmer Vernooij <jelmer at samba.org> - http://samba.org/~jelmer/
Jabber: jelmer at jabber.fsfe.org